/*
 * Copyright 2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.tjut.domain;

import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;

import javax.persistence.CollectionTable;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Product {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long id;
	
	@Column(nullable = false)
	private String name;

	@Column(nullable = false)
	private BigDecimal price;

	@ElementCollection(fetch=FetchType.LAZY)
	@CollectionTable(name="product_attributes")
	private Map<String, String> attributes = new HashMap<String, String>();  // 商品附加属性

	protected Product() {
	}

	public Product(String name, BigDecimal price) {
		this.name = name;
		this.price = price;
	}

	public void setAttribute(String name, String value) {
		if (value == null) {
			this.attributes.remove(value);
		} else {
			this.attributes.put(name, value);
		}
	}

	public String getName() {
		return name;
	}

	public Map<String, String> getAttributes() {
		return attributes;
	}

	public BigDecimal getPrice() {
		return price;
	}

	@Override
	public String toString() {
		return "Product [name=" + name + ", price=" + price + ", attributes=" + attributes + "]";
	}
}
